Question

Suzie determined the range of a quadratic function to be y ≤ –5. Choose the correct interval notation.

Answer 1

The range of equation is

• interval :(-5, ∞)
• interval :[-5, ∞)
• interval: (-∞, -5)
• interval: (-∞, -5]

What is interval?

A interval is a set of real numbers that contains all real numbers lying between any two numbers of the set.

Given function :  y ≤ –5

if, y > -5 then,

interval :(-5, ∞)

if y ≥ -5  then

interval :[-5, ∞)

if y < -5   then

interval: (-∞, -5)

if y ≤ -5   then

interval: (-∞, -5]

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